Effect Of Ph On Bornite Flotation

The Importance of pH in Flotation

In flotation, pH control is a vital method to control selective mineral separation. A standard depressant that is used is an Alkali. An Alkali is any substance that when mixed with Acid will neutralize each other and form a new chemical substance called a BASE. This is very important. The ore may be either alkaline or Acidic. To have a positive control over flotation, it is necessary to be ...

A STUDY OF FLOTATION AND LEACHING BEHAVIOUR OF …

Figure 14: Collectorless flotation of pyrite in the presence of Cu2+ ions (pH 9.2, flotation time - 5 min). [15]. ..... 28 Figure 15: Effect of atmosphere (grinding, flotation) on chalcopyrite floatability after grinding

The impact of water quality on flotation performance

The impact of water quality on flotation performance pH, Eh, DO and dissolved species in recycle water streams (e.g. thickener overflow, decant (tailings) dam return) contributing to a circuit water are also shown in Table I. TDS and TOC levels may also be raised by reagent addition for pH control (e.g. lime) and recycled organics (e.g ...

The effect of underground mine water on performance of the ...

The flotation pH is, however, slightly different. East ore responds better at a higher pH of 10.5 while the west ore is best floated at a pH of 9.5 (Table I). The reason for this difference is not precisely known but this is likely attributable to the slight mineralogical variation in the host rock and the bornite to chalcopyrite ratios—these

Centenary of Flotation Symposium

THE INFLUENCE OF pH AND OLEATE CONCENTRATION ON CHROMITE FLOTATION (after Palmer, M.C.Fuerstenau and Aplan, 1975) This chromite, FeO.Cr 2O 3, assayed 42% Cr(III), 8% Al 2O 3, 4% Fe(III), 7% Fe (II), and 8% Mg(II), with a PZC at about pH 7. Flotation response at high pH match the hydrolysis peaks of FeOH and MgOH, respectively.

The effect of water quality on the collectorless flotation ...

Water quality had no effect on the collectorless flotation of chalcopyrite which was very strong, in excess of 96% copper recovery, but all three lower quality waters had a detrimental effect on the recovery of bornite compared to that obtained in distilled water. The depressant effect was so strong that the little recovery achieved in these ...

Lime use and functionality in sulphide mineral flotation ...

Nov 01, 2019· Lime in flotation, as a pH modifier, can also regulate not only collector adsorption, but also the effect of other commonly-used depressants such as sodium sulphide or sodium cyanide (Yoon, 1981, Ghiani et al., 1984, Wang and Forssberg, 1996). Cyanide acts by dissolving copper from the surface of the activated sulphides, thus preventing ...

Effect of pH on Flotation - VSIP.INFO

Effect of pH on Flotation Turkish J. Eng. Env. Sci. 26 (2002) , 309 – 318. ¨ ITAK ˙ c TUB Effect of pH on Pulp Potential and Sulphide Mineral Fl Views 5 Downloads 0 File size 303KB

Effect of pulp potential on the flotation of a sulfide ...

Chalcopyrite, CuFeS2, is an important source of copper and is recovered from ore by the flotation process. Chalcopyrite is commonly associated with other metal sulfides, e.g. bornite, Cu5FeS4.

Minerals | Free Full-Text | Derivation of Flotation ...

Bornite recoveries also increased at any pH condition by a small dosage of NaHS. Moreover, the effect of pH was confirmed, and it was found that the floatability at low pH (pH 8) was higher than the high pH condition. This can be because of complex ion, Fe(HS) 2 0 .

The impact of water quality on flotation performance

The impact of water quality on flotation performance pH, Eh, DO and dissolved species in recycle water streams (e.g. thickener overflow, decant (tailings) dam return) contributing to a circuit water are also shown in Table I. TDS and TOC levels may also be raised by reagent addition for pH control (e.g. lime) and recycled organics (e.g ...

The effect of underground mine water on performance of the ...

The flotation pH is, however, slightly different. East ore responds better at a higher pH of 10.5 while the west ore is best floated at a pH of 9.5 (Table I). The reason for this difference is not precisely known but this is likely attributable to the slight mineralogical variation in the host rock and the bornite to chalcopyrite ratios—these

Effect of pH on Flotation | Ph | Redox - Scribd

Effect of pH on Flotation - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Paper looks at effect of pH on flotation of different sulphide minerals

Centenary of Flotation Symposium

THE INFLUENCE OF pH AND OLEATE CONCENTRATION ON CHROMITE FLOTATION (after Palmer, M.C.Fuerstenau and Aplan, 1975) This chromite, FeO.Cr 2O 3, assayed 42% Cr(III), 8% Al 2O 3, 4% Fe(III), 7% Fe (II), and 8% Mg(II), with a PZC at about pH 7. Flotation response at high pH match the hydrolysis peaks of FeOH and MgOH, respectively.

The effect of water quality on the collectorless flotation ...

Water quality had no effect on the collectorless flotation of chalcopyrite which was very strong, in excess of 96% copper recovery, but all three lower quality waters had a detrimental effect on the recovery of bornite compared to that obtained in distilled water. The depressant effect was so strong that the little recovery achieved in these ...

1 Froth Flotation – Fundamental Principles

will produce compensating effects in other areas (Klimpel, 1995) Froth flotation is a good example of an engineering “system”, in that the various important parameters are highly inter-related, as shown in Figure 1. It is therefore important to take all of Chemistry Components Collectors Frothers Activators Depressants pH

Effect of pH on Flotation - VSIP.INFO

Effect of pH on Flotation Turkish J. Eng. Env. Sci. 26 (2002) , 309 – 318. ¨ ITAK ˙ c TUB Effect of pH on Pulp Potential and Sulphide Mineral Fl Views 5 Downloads 0 File size 303KB

Process mineralogy as a key factor affecting the flotation ...

To investigate the effect of mineralogical and textural properties of sulfide minerals on the flotation process, a sample was collected from the flotation circuit of the Sungun copper concentration plant. Tables 1, 2, and 3 show the mineralogical and chemical composition of the feed sample, as determined by X-ray fluorescence (XRF) analysis ...

Modifiers For Chalcocite Flotation

Centenary Of Flotation Symposium, Richardson and walker showed that the flotation of chalcocite bornite chalcopyrite and pyrite with potassium ethyl xanthate is controlled by the conditioning potential similar to earlier findings by heyes and trahar the active surface entities for chalcoc Modifiers For Chalcocite Flotation

Adsorption kinetics and thermodynamics of sodium butyl ...

In this paper, the effect of sodium butyl xanthate (NaBX) adsorption on the surface of bornite at different pH on flotation was studied by adsorption kinetic and thermodynamic. The flotation results demonstrated that the recovery was the highest when pH was 9 in NaBX solution (4×10−5 mol/L). The adsorption kinetics showed the reaction of NaBX on the bornite conformed to the second order ...

Study of Flotation Parameters for Copper Recovery from ...

A detailed study was conducted to evaluate the effect of particle size, pH, flotation time, collector type and addition on efficiency of tennantite flotation. It was shown that maximum copper recovery of 95,3% was obtained at pH 12.3 by lime.It was suggested to grind up to 65.72% of -0.074 mm to achieve the optimum recovery of copper and high

AN INVESTIGATION OF COPPER RECOVERY FROM A …

Fundamental adsorption, micro-flotation and Eh-pH tests were conducted on pure ... Figure 2.8- pH effect on the activation of chrysocolla and subsequent recovery with sodium ... Comparison between collectorless bornite flotation and flotation with PAX,

Effect of pH on the flotation performance of incinerator ...

ABSTRACT Flotation was proved to be effective for decarburization and removal of dioxins from hospital solid waste (HSW) incinerator fly ash, but weathering makes it difficult. The effects of three types of surfactants including nonionic (Tween 80), anionic (SDS), and cationic (CTAB) at different pulp pH values on the flotation performance of weathered HSW incinerator fly ash were investigated.

Effect of Flotation Reagents for Upgrading and Recovery …

also depressed at pH 11. 3.2 Effect of pH on flotation Maintaining PAX and MIBC concentrations at 100 g/t and 200 g/t, respectively, flotation behav-iour of Cu and Mo was investigated at varying slurry pH ranging from pH 3 to 11 and the results obtained are presented in Table 3 and Fig. 3. Pulp density was maintained at 20% and flotation was

THE EFFECT OF pH MODIFIER ON THE FLOTATION OF …

Keywords: flotation, pH modifier, celestite, calcite, sodium oleate, concentration ores. 1. INTRODUCTION Somasundaran (1975) states that pH is the best factor with which to control flotation of most minerals, and that selecting a suitable pH value is essential for mineral separation.

Effect of pH on Flotation | Ph | Redox - Scribd

Effect of pH on Flotation - Free download as PDF File (.pdf), Text File (.txt) or read online for free. Paper looks at effect of pH on flotation of different sulphide minerals

Effect of pH on the flotation performance of incinerator ...

ABSTRACT Flotation was proved to be effective for decarburization and removal of dioxins from hospital solid waste (HSW) incinerator fly ash, but weathering makes it difficult. The effects of three types of surfactants including nonionic (Tween 80), anionic (SDS), and cationic (CTAB) at different pulp pH values on the flotation performance of weathered HSW incinerator fly ash were investigated.

Effect of pH on Flotation - VSIP.INFO

Effect of pH on Flotation Turkish J. Eng. Env. Sci. 26 (2002) , 309 – 318. ¨ ITAK ˙ c TUB Effect of pH on Pulp Potential and Sulphide Mineral Fl Views 5 Downloads 0 File size 303KB

Effect of pH on Pulp Potential and Sulphide Mineral Flotation

Control of pH is one of the most widely applied methods for the modulation of mineral flotation. In this study the effect of pH on potential in solution and sulphur minerals flotation is discussed with various electrodes. The electrodes were platinum, gold, chalcopyrite, pyrite and galena. In solution, potentials were linearly dependent on pH with a different slope for each electrode.

Minerals | Free Full-Text | Fundamental Flotation ...

IPETC is selective, and pH has influence on the flotation capacity of IPETC; that is, OH − has an effect on the reaction of IPETC and mineral. The results of pure mineral flotation tests show that IPETC has excellent performance in separating galena from chalcopyrite at a pH 9.5.

1 Froth Flotation – Fundamental Principles

will produce compensating effects in other areas (Klimpel, 1995) Froth flotation is a good example of an engineering “system”, in that the various important parameters are highly inter-related, as shown in Figure 1. It is therefore important to take all of Chemistry Components Collectors Frothers Activators Depressants pH

Study of Flotation Parameters for Copper Recovery from ...

A detailed study was conducted to evaluate the effect of particle size, pH, flotation time, collector type and addition on efficiency of tennantite flotation. It was shown that maximum copper recovery of 95,3% was obtained at pH 12.3 by lime.It was suggested to grind up to 65.72% of -0.074 mm to achieve the optimum recovery of copper and high

Modifiers For Chalcocite Flotation

Centenary Of Flotation Symposium, Richardson and walker showed that the flotation of chalcocite bornite chalcopyrite and pyrite with potassium ethyl xanthate is controlled by the conditioning potential similar to earlier findings by heyes and trahar the active surface entities for chalcoc Modifiers For Chalcocite Flotation

Effect of pH on the flotation performance of incinerator ...

(2019). Effect of pH on the flotation performance of incinerator fly ash. Separation Science and Technology: Vol. 54, No. 11, pp. 1829-1841.

Water Quality in PGM Ore Flotation: The effect of Ionic ...

This study investigates the interactive effect of plant water ionic strength and pH in the flotation of a sulphidic PGM bearing ore. Results suggest that water quality variations may have effects at both the air-water interface as well as the mineral air interface. Key words Froth stability, Ionic strength, pH, Water quality, Water recovery

EFFECT OF pH ON SURFACE CHARACTERISTICS AND …

Effect of pH on surface characteristics and flotation of sulfidized cerussite 677 2003; Rashchi et al., 2005; Kuchar et al., 2006). Unfortunately, difficulties in controlling the dosage of sulfidizing agents are a common issue. An excessive amount may cause the depression of oxidized minerals, whereas an insufficient amount results

Effects of bicarbonate, phosphate and high pH on the ...

(1992). Effects of bicarbonate, phosphate and high pH on the reducing capacity of Fe‐deficient sunflower and cucumber plants. Journal of Plant Nutrition: Vol. 15, Iron, pp. 1519-1530.

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